Brush-machine.



II. M. SCHWARTZ.

BRUSH MACHINE. I

APPLICATION FILED JAN. 9, 1912.

Patented Jan. 1,9', 1915.

H. M. SCHWARTZ.

BRUSH MACHINE.

APPLICATION FILED JAN. 9. 1912.

Y1,125,1870- Patented Jan.19,1915.

9 SHEETS-SHEET; 2.

H. M. SCHWARTZ.

BRUSH MACHINE.

APPLICATION FILED JAN.9. 1912.

Patented Jan. 19, 1915..

9 SHEETS-SHEET 3.

H. M. SCHWARTZ.

9 SHEETS-SHEET 4.

v Hanf/0f:-

H. M. SCHWARTZ.

BRUSH MACHINE.

APPLIOATION FILED JAN. 9, 1912.

Patented 1311.111915.

9 SHEETS-SHEET 5.

@abb Wow 'f diffe/Heya H. M. SCHWARTZ.

BRUSH MACHINE.

APPLICATION FILED JAN. 9, 1912.

Patented Jan. 19, 1915.

9 SHEETS-SHEET 6.

H. M. SCHWARTZ.

BRUSH MACHINE.

APPLICATION l-"ILBD JAN. 9, 1912.

Patented Jan. 19, 1915.

9 SHEETS-SHEET 7.

H. M. SCHWARTZ. BRUSH MACHINE.

APPLIOATION FILED JAN. 9, 1912.

Patented 1111.19, 1915.

- I l 674/" l @www ' H. M. SCHWARTZ.

BRUSH MACHINE.

APPLICATION FILED JAN. 9, 1912.

Paten-ted Jan. 19, 1915.

9 SHEETS-SHEET 9.

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HERMAN M. SCHVARTZ, OF NORTiI-IAMPTON, MASSACHUSETTS, ASSIGNOB. '10FANNE B. LOOK, GF NORTHAMPTGN, MASSACHUSETTS, GEORGE H. BURR, OF NEWYORK, N. Y., AND ELDON MACLEOI), OF WESTWOOD, E/IASSACHUSETTS, TRUSTEES.

Baugh-MACHINE.

ineens?.

Specication of Letters Patent.

Application filed January 9, 1912. lSerial No.` 670,177.

T 0 all 107.10m t may concern.'

Be it known that l, HERMAN M. SCHWARTZ, citizen of the United States,residing at Northampton, county ofHampton, State of Massachusetts, haveinvented a certain new and useful improvement in Brush-Machines, ofwhich the following is a specification, reference being had therein tothe accompanyingA drawings.

My present invention relates to automatic machines for drilling holes inbrush backs and setting therein tufts or knots of bristles which areheldin place by pieces of metal known as staples or anchors.

.The machine belongs to the general type of machines known as Ganemachines, but the machine embodying my present linvention also includesmechanism for automatically positioning the brush backs during theoperation of drilling'and plugging and for presenting to the drill andplugger new been completed.

brushv backs when the previous ones have The machine embodying mypresentinventon is wholly automatic, it, only being necessary for theoperator to keep the bristle reservoir filled with bristles, the machinesupplied with flat wire from which the staples are cut, and toreplacethe completed brush by an vundrilled blank. Heretofore so far asis known to me, machines of this charl acter have been constructed toproduce only brushes having an even number of parallel rows of bristlesas for instance a four-row brush.

The machine embodyingmy present invention is especially constructed foruse in the manufacture of brushes having an un-y even number of rows,saidy rows not being parallel to each other.

The machine shown gin the accompanying drawing is intended for use inthe manufacture of a three-row brush. the rows of which converge towardthe end or tip of the brush. As will be explained later, the completecycleA ofy operations of this particular two three-row brushes of thelkind descri machine includes the drilling 'and tufting f n;

the parts coming back to their original or starting position after thecompletion of the.

second brush. It will\of course be understood that -the drilling of oneblank and tufting of another is proceeding simultaneously.

The machine naturallv divides itself into two halves, one of whichcontains the drill, staple formingyand feeding mechanism, the bristlereservoir, knot selecting mechanism, andthe plugger together with theoperating parts therefor. This half of the machine is conveniently knownas the body of the machine. It isalso referred to herein as 'the fronthalf since this is the part nearest the operator. The back half of, themachine is known as the head and is. devoted exclusively to the blankpositioning mechanism by means of which the blanks are presented to thedrill and plugger in proper positions and at the proper time.

While l have usually'referred to the piece of metal with which the .tuftis fastened into the brush back as a staple, l wish to be understood asincluding by this term any metallic member for securing a single tuft ofbristles whether or not of the solid construction known as an anchon' Ihave also referred to the piece of boneor celluloid which is drilledandcilled with bristles to form the brush, as the brush blank, yalthoughit is often 'referred to in practice as the handle.

The general mode of operation of the machine may for convenience ofunderstanding the following description of the machine be outlined asfollows: The knot picker selects a knot ofbristles of the right sizefrom the bristle reservoir and conveys it to the chan- Vtact with thebrush blank, when the pusher advances further and sets the knot ofbristles. Simultaneously with this the drill is caused to advance anddrill a hole in a brush back which is also held in the carrier. Thedrill and plugger then retreat, and during this` movement the carrierwhich is stationary so far as movement toward or away from the body ofthe machine is concerned, is then moved horizontally and vertically tobring the brush blanks in position to have for presenting the brushbacks to the drill and pluggen, and since said mechanism is capable ofindependent use,l ll have not claimed it specifically in thisapplication, but have done so in the divisional application tiled Nov.l, 1912, Serial No. 729,303.

' The invention will be fully understood from the following descriptiontaken in connectionwith the accompanying drawings, and the novelfeatureswill be pointed out and clearly defined in theclaims at the close of thespecification.

I of the staple pusher.

ln the drawings, Figure 1 is a. side elevation of a machine embodying myinvention,

the front of the machine being at the right.

of this view. Fig. 2 is an elevation of the front half ofthe machinelooking toward the right in Fig. 1.` lln this view the pivots of the camlevers have been shown in sec'- tion to assist in tracing the movement.

Fig. 3 is an elevation of the back half of the'A machine looking towardthe left in Fig. 1. Fig. 4 is a Fig. 5 is a top plan view of the portionof the machine shown in Fig. 2. Fig. 6 is a side elevation of the brushholder and related mechanism on ay somewhat enlarged scale. Fig. 7 `is afront Lelevation 'of the parts shown in Fig.A 6 and on the same scale.Fig. S is a detail of the bristle picker arm. Fig. 9 is a detail of theupper end of the slide operating arm 1,06 and connected parts. Fig. 10is a ldetail of the cushion pins for the plugger slide. Fig. 11 is aview in perspective of the parts which actuate the feed wheel. Fig. 12is a section on line 12-12 Fig. 5. Fig. 13 is a vertical section of thedie and punch, and related parts. Fgitl is a -view in perspective of thepartsshown in Fig. 13. Fig. 15 is Fig. 16 is a section of the staplepusher on line16-16 on Fig. "15.

Fig. 17 is a section on line 17-17Fig- 6, showing the parts locked. Fig.18 is/,a diagrammatic view illustrating the path of movement of thedrill and tufter relatively to the'brush blanks, and corresponding withone cycle of movement of the machine.' Fig 19 is a diagram of thehorizontal and vertical cams. i

Referring to the drawings, the drill 69 (see Figs. :1. 2 and 5) is heldin` a chuck 7 0 onthedrill spindle 71.v :Said drill spinel thisspecifcarear 'elevation of the machine.

a side view of the end L subject place by disturbance of the arrangementagresser /dle 71 is slidable longitudinally'in suitable bearings in theframe vof the machine and is caused tol rotate by a belt (notshown') ona pulley 72. The rear end of the drill spindle 71 is providedV with acollar 73 against whichv rests a spiral spring 74C. which tends to holdthe drill spindle 71 away from the brush blank. rlllhe drill spindle 71is pushed forward compressing the spring 7-1 and coming into/ contactwith the brush blank to drill the hole by means of an adjustable stud125 on an arm 7 5 secured to a'rock-shaft 76 carried in the bearing 7 8.'llhe other end of the rock-shaft 76 is provided with an arm 79 securedthereto by a set screw 8G. rlhis arm 7 9 has on its lower end a cam roll81 which contacts with a cam 82 on the main shaft 35. IThe ladjustablestud 125 on the arm furnishes means for varying the depth of the holedrilled in the brush back and to adjust the drill.

Referring more particularly to Figs. 2 5 there is shown at 11 thebristle reservoir or hopper in which the bristles are placed verticalposition, and are crowded forward by a `follower 12 operated by chains13 passing over pulleys 14. The chains 13 are kept taut' by weights notshown.. The forward end of the bristle `reservoir is formed by 'twoinclined planes 15 and 16. rll`he bottom 560 of the bristle reservoir'is 'adjustable vertically by means of an adjusting screw 501 working ina lug 502 on the frame of the machine.,

The tuft lforming mechanism consists of a single member called the knotpicker des ignated 18 in the drawings. 'llhis member is seen moreclearly in Fig. 8. llt consists of a thin needle-like piecel of metalhaving a sharp point.'y

on one side and inclined on the other side rFhe knotpicker is straightvas shown at 19', in Fig. 8i llmmediately behind the inclined portion 19is loca/'ted notch 20 within which the bristles are received. The knotpicker 18 is forced into one side of the bristle reservoir 11 and thebristles lill the notch 20, after which it is withdrawn taking thebristles in the notch with it. As the knot picker does not go into themiddle goes in only on one side, it does not disturb the arrangement ofthe bristles in the resern voir as much, thereby avoiding many of thetroubles to which machines of this type are and which are caused in therst of the bristles in the reservoir. L The size of the notch inthe'knot picker determines the size of the knot. lf it is' desired tochange the size ofthe knot a different knot picker having a 'notch ofthe desired size/is substituted'. f

of the bristle reservoir, but L.

The knot picker 18l reciprocates in two opl l posite registering grooves550 and 551 (see 12) the former of which is-f oimed in maaier thev sideof the member 503, which is adjustable by means of the screw 504, whilethe other groove 551 is formed in the adjacent side of a member 552secured to the frame of the machine. The member 552 is fixed and themember 503 is movable forward for the purpose of adjusting the width ofthe bristle channel which is left between these two members. Thisbristle channel 41 is of a width about equal to the depth of thenotoh inthe knot picker so that all the bristles in the notch 20 are retained inthe notch from the time the picker leaves theV about its middle by anadjustable link. This adjustable link is made in two parts 25 and 26,the part 25 being connected with the picker arm 21 by the pivot 27 whilethe part 26 is connected to the cam follower arm 23 by the pivot 28shown in dotted lines in Fig. 2. The parts 25 and 26 are securedtogether by a screw 29 in a slot 30 in the part 25 and the adjustment isconveniently made by means of a thumb screw 31 revolving in the lug 32on the part 26 and in the lug 33 on the part 25, the hole in the latterlug being screw-threaded. From the foregoing, it will be plain that byturning the thumb screw 31 the position which the notch4 20 in the knotpicker occupies at'the left hand end of its stroke (as seen in Fig.L 2)may be adjusted, the`purpose of this adjustment being to make sure thatthe bristlevpicker will v always stop at the right, time with its knotof bristles opposite the canal in which the staple pusher moves,f sothat the entiretuft of bristles will be certain to be carried forwarddown the canal by thestaple pusher. The knot picker is operated by'a cam34 on the main shaft 35, said cam driving a ca1n follower 36 on thelower end of the cam follower arm 23. This cam is a double orcylindrical cam to give the driven part a positive motion'in bothdirections.

the bristle picker 18 which is'away from the reservoir is secured to across-head -37 by tion is such that the upper end of the picker arm 21is free to rise and fall :as .the Crosshead 37fis-carried forward.V i

' The' ystafplesbylineans nf winchv tufts The end of i of bristles aresecured in the holes inthe brush blank consist of small pieces of metalof any well known shape cut from a wire or tape of metal., This wire isshown at 42, and is supported upon a reel (not shown) or in some othersuitable manner. The wire is fed forward the proper distance and thenremains stationary while the staple is being cut.

The feeding mechanism consists of two jaws 43 and-44. The upper jaw 43is carried on the end of the jaw arm 45, pivoted at 46 to the frame ofthe machine, and this jaw arm is caused to swing about the pivot 46 asuilicient anrunt to' advance the wire the required distance. Themovement of the jaw arm is produced by a cam 47 acting through thefollower arm 48, pivoted at 49 to the frame of the machine, and the link50 pivoted at 51 to the jaw arm 45. The

upper end of the follower arm 48 isslotted as shown at 52 and theposition vertically of the left hand end of the link 50 in the lsaidslot 52 is adjustable by means of the nut 53- so that the amount whichthe wire 42 is fed forward at eachvswing of the jaws 43 and 44 may bevaried.

As the cam 47 is conveniently a plate-cam capable of moving the parts inone direc-l tion only, there is provided a spring secured at 61 to theframe 4of the machine, and at 62 to the jaw arm 45. This spring servesto retract the parts after each advance movement of the wire. The lowerjaw 44 is guided in a bent portion 58 of the jaw arm 45 and is held in;place in the jaw arm by means of the leaf spring 59. The.

in a. corresponding spherical cavity 64 in a.

bell crank lever 65 which is pivoted at 66 to the frame of the machine.The ball and socket joint 63 permits the lower j aw44 to swing with thejaw arm 45, and at the same time to Abe given a slight vertical movementby the bell crank 65 to seize or release the tape. The ,bell crank isprovided at the lower end with a cam follower 67 which is in contactwith a cam 68 located on the main shaft 35. The parts are so timed thatjufst before the cam 47 begins to advance the jaws 44 and 43 to feed thewire, the cam 68 will move the lower jaw 44/upward to pinch .the wireand said camA 68 will hold the lower jaw 44 in this position during theadvance movement of the wire. The wire is released 4by the jaws at theend of the adl place :the Sjtanle'i-S 1,30

construction the staple is deposited in the staple pusher channel by thepunch itself so this consists of a stationary die 83, (seeparticularlyFigs. 13' and 14), of any suitable 'construction but preferably made intwo parts, and the punch 84 which is movable vertically. rllhe punch 84is carried on the top of a punch-slide 85 guided by slots 86.

r1`he punch-slide 85 is slotted vertically as.

shown at 88 in Fig. 1, to extend around the stationary die 83, and theAtop ofthe slot is closed by a cross-member 89 which is essentially apart of the punch-slide 85. To this cross-member 89, the punch 84 isadjustablyisecured by means of a screw studI 90 and lock nut 91. Bymeans of this stud 90, the punch 84 may be raised or lowered verticallyywith reference to the punch slide l85.

'llhe punch slide 85 is given its reciprocating vertical movement byacam 92 connected to the punch slide by a rock-shaft one arm of whichcarries the cam roll while another arm 505 is connected with the punchslide. n

rlhe cam 92 is on the main shaft 85, and as it is a rim cam, a spring506 is employed to hold the roll against the cam and to lift up thepunch slide after each stroke. rl`his spring 506 is secured to a thirdarm 507 von the rock shaft. f

After the knot picker is moved back out of the bristle reservoir to theposition shown in Fig. 5, the punch 84 having punched out a staple,the'staple is pushed down into a channel 96, see Figs. 1, 13 and 14, inwhich the pusher 97 slides, and the die holds the staple against thebottom of the pusher slide way until the pusher pushes it out from underthe punch. rThe punch 84 is located in front of the bristle channel 41,so `that when the pusher 97 advances it pushes the staple forward in thechannel 96 until the staple contacts with the front side ofthev knot ofbristles which are held by the notch 20 inthe knot picker 18. A further.advance of the pusher 97 doubles thebristles and then carries themforward intoxthe brush blankv through the nose 98 of the plugger. rllhejunction of the bristle channel 41 and I the slideway through the noseof the plugger is curved as will be plainly seen in Fig. 1 at 100 tofacilitate doubling theknot of bristies, andthe passage into the nose ofthe plugger is widened out in the vertical plane as seen at' 99. -Bythiis constructing this part of the machine the speed of the machine isincreased, as` the tuft of bristles 1s .doubled with great rapidity. Thevpusher f 97 is shaped in cross section like an inverted T as yseen inFig. 16

i andthe two projections 601 and 602 fit into grooves in'the' walls ofthe plugger. rllhe portion 603I ofthe pusher stiidens it so that y thebrush maaier Y it will not bend in inserting the staple in hardmaterial. rll`he end of the'pusher is cut away as seen at 604, Fig. 15sothat the pusher' may not collide with the punch in case the upwardmovement of the punch vdoes not begin quite soon enough.

lin my 'up to the brush blank and then stand still while the pusher 97advances still further and inserts theknot of bristles and sets thestaple. 'llhese relative movements ofthe plugger and pusher areaccomplished in the following manner. ll`he plugger nose 98 is in twopiecesl formed integral with the top and bottom plates 101 and 102whichvtogether form the plugger slide. Registering grooves in theadjacent faces of the two plates 101 and 102 together form'the chan-`nel 96 in which the pusher slides, and the two plates 101 and 102 aresecured together by the cap'108 on'the nose lof the piugger and a thumbscrew 104, seen in F ig. 5. Both the slide and pusher 97 are moved bythek cain'105 (see Fig. 2) through the arm 106 pivoted at its lower endto the base of the machine and carrying a cam roll 107. This arm 106 iscored out, as seen in Figs. 1 and 2 to. clear the drill spindle 71, andat its upper end is forked in two planes, so that four prongs 108 areformed. 'llhese prongs 108 embrace a spool 109 (see also Fig. 9) towhich is secured by a pin 110 a rod 111 on the frontend of which iscarried the pusher 97. 'llhe ends of the spool 109 are slotted to slideon ways 112 fastened by screws 113 to the frame ofthe machine. By thisarrangement off the parts, the pusher is accurately guided. The pusherbeing positively connected vwith the arm 106 is moved constantly. 'llheplugger'slide is also caused to move by the'l arm 106'the prongs 108 ofwhich contact with a series of cushion pins on the slide, but thismovement occurs only at the end of each stroke. The cushion pins areindicated at 114 and 115 in Fig. 5. Une of these pins is shown inFig.'10. lllt is surrounded by a spring 116 and the pin 114 is slidablein the hole but is prevented from coming out by the thimble 117 whichoisscrewed into the hole in the plugger slide. A collar 118 on the innerend of the pin contacts with the thimble 117 and prevents the pin' beingpulled out by the spring 116. When the arm v106 has advanced until 1tcontacts with the pins 114, it picks up the plugger slide and moves itforward until a cross-arm 120 fastened to the rear end of the lowermember 102 contacts with two adjustable stops 121 secured to the table Aof the machine. ,Said adjustable stops '121 are made in the form ofbolts passing through I lugs 122 and secured 'in place by set nuts 123.

On the reverse movement of the arm 106 the plugger slide moves backcoincidently with the pusher until the cross-.arm 120 attached to theplugger slide strikes a stop 126 contained in a lug 127 on the frame ofthemachine, being moved by the two springs 508 one end of each of whichis secured to a post 509 on the frame of the machine. At this point theplugger slide stops and the pusherv continues its movement until theprongs 108 contact with the back pair of cushion pins, these beingnumbered 115. The plugger slide which is composed of the top and bottomplates 101 and 102 has near its forward end a hole 128 in which islocated the die S3 and punch 84e, which are with the knot of bristleswhich havel previously been brought from the bristle reservoir by theknot picker. The plugger continues to advance and doubles the knot ofbristles carrying it forward to a point near the orifice of the pluggernose. About this time the prongs 108 contact with the cushion pins 114and the entire slide and plugger are carried forward until the pluggernose is about in contactfvviththe face of the brush blank at which timeits forward movement is checked by the stops'121. pusher advances stilla little further and pushes the knot of bristles andthe staple into thehole in the brush block and setsI the staple, this furtherforwardmovcment of 'the pusher being permitted by the cushion pins'114.Therev'erse movement is as previously described. y 4

The head or back half of the machine will i now be described. Aspreviously stated, in

the machine embodying my .present invention the face of the brush blanksto be drilled and tufted. remains in the same vertical plane throughoutthe operation, -in other words, the plugger and drill advance to meetthe brush blank and the brush blankis stationary instead of the brushblank advancing to a stationary drill and pluggen rl`he arrangement hasthe great advantage that the .carrier for the brush backs may be mademuch more rigid and consequently the work performed by the machine ismore accurate thanl is possible -where the carrier has a forward andbackmade in 'the form. of an. endless chain I Thereafter the thedrilling of one brush blank is taking place, the lplugger is setting theknotsin another brush blank. After each hole has been drilled, the brushblank is moved sidewise and raised or lowered so that it is in positionfor the next hole to be drilled. At the same time corresponding holes inthe other blanks are being tufted. After all of the holes in the brushblank have been drilled or tufted, the carrier which has previously beenlocked in place, is unlocked and is revolved a suflicient distance tobring the next brush blank into position after which it is again lockedin place. brush blank which is being tufted is separated from the holdercontaining the brush rlhe holder in which is located the` blank which isbeing drilledby another holder." As will be later explained the cams ofthe positioning mechanism complete two blanks for each revolution of thecams. By arranging the holders on the carrier as described, the sameportion of the cam is positioning the carrier during the tufting whichpositioned the carrier when this brush blank was drilled. 1n this way,any deviation between the two parts of the cams causes no wrongpositioning of the' brush blank when it is being tufted.

The -positioning mechanism is composed of three groups of elements, oneof which moves the carrier horizontally, anotherof which moves thecarrier vertically, and the third of which unlocks the carrier andrevolves it after a brush blank has been drilled and a correspondingblank has been tufted. Although the cycle of rotation of the machinecovers the making of two three-row brushes,`the carrier is unlocked andmoved after each brush is completed, that is twice for each cycle of themachine. rThe carrier and positioning mechanism therefor are supportedrigidly upon a frame Bmade upA of convenient pieces suitably securedtsgether. 'll his frame is preferably heavy and strong to insurerigidity of the carrier. The carrier is constructed, in the form of anendless chain consisting' of fifteen brush lblank holders 130 securedtogether by links 131 pivoted to lugs 132 on the back of the blankholders 'llhe endless chain formed by the blank holders 130 and links131 revolves upon two sprocket wheels 133 andA 134 carried on axles 135and 136.

The brush blanks C' and E are held in place in the holders 1301i betweena fixed abutment 139 anda movablev abutment 140 which is yieldinglypressed against the *side of the brush blank bythe springs 141. Themovable abutment 140 is provided with a shoulder 142 adapted to. engagethe side of the neck. of the brush. blank, as is plainly iso seen inlig. 7o The tip end of the bmsh blank contacts With a Wall 143. 'll`hebrush blank is insertedv in the holder by being .pushed in from the lefthand side, as `seen in Fig. 7 9 until the tip of the brush blankcontacts with the Wall 1&3, 'llhe cavity in which the brush blank isreceived is slightly narrower at the front than at the rear, z', e. theWalls are under out, although the brush blank is not oil this shape sothatthere is a tendency tor the brush blank to be crowded back againstthe rear-Wall or the cavity and the brush blank is always accuratelypositioned the blank holder and held there rigidly.,

`flvvo brackets'137 and 138 support the carrier. The iront portion orthea-lower bracket 137 is-orrned into a grooved guide or shoe 611 uponwhich the holders are `guided when. the carrier is shifted. The guide611 also 'torrns the support tor the holders durin` the drilling andturting, and

' the carrier locked to it during all this time The holders 130 haveprojections 612 on their edge which slide in grooves in the said guide611. The tvvo brackets 137 138 which support "lie carrier are mountedupon slide l which is known as the vertical slide9 which is rnovable .in151 These Ways are 'themselves secured to horizontal slide 152? which.is carried in Ways in rai'ne or 'the machine.

The two slides 15@ and 152 are -inovel by earns and 15e` which are respctively ulie vertical and horizontal i earns,F

o? located-on a cani sha 156 raoun ae the nia nvided tion is imparted toconnecting rod by the earn.` Tae connecting rod is guided ina bearing163 therarne or the machine and is forked rear end 'for connection bymeans of a pin 1611 to a sliding block 165 which is guided in a slot 166in a rocking lever 1679 which is pivoted at 16%. The upper end oftherocking lever 167'is also slotted as shown at 169 to receive the goin170 which is held in tvvo lugs 171l `(one only being visible in Fig. 1)on the bottoni of a slide 172 which is knovvnias the bunter slide Thebunter slide is suitably guided in the ranre'l of the 'machine of themachine and iscaused to re-V idealer ciprocate toward and away from theVbody by the parts just described. A bunter 173 is secured to the top ofthe bunter slide and its forward end is in line with one arm of a bellcrank 174 (seelig. 11) pivotedat 175, to the frame l The other end orthe bell crank 171 projects into aslot 176 in the feed dog 177 (seealsoig., 3).. The rear end or' tail of the feed dogl 177 is forked. toreceivea stud 178 on an upwardly projecting edge of the trarne l Theother end ot the feed dog is Jformed into a point 180 for engagementwith the teetl or the leed vvheel 157, and also has a Ward projection181 :tor a purpose which will be later described. A spring 182 securedto a post 183 on the rail oi" feed dog 177 draws back the reedy dogtoward lett as seen in Fig. 3 alter each reciprocan or the leed dog. @nerevolution or' the main @or each hole drilled an shaft 35 occurs l eachknot oi' bristles set, and therefore, z bunter slide which isoperatediroin this c shaft is caused to strikeA the tail oin the 174move the 'leed dogg)1 177 f engagement the leed Wheel 157 for eachrevolution ot main shalt 'eed Wheel is moved one notch l holedrilledjancl tutt set, Backvvarcn l tion o he cani shaft 156 on whichthe T/vlieel ..57 is located is preventedv by ot a lockingavlieel 158and locking,l n 1811 mounted on a secured to a ldon a li le slide 187which can be l' e ci, p 'the niacin;

t at ri gli-t v 1V i) l* on toward 'face 195 cn 'l correspon glyinclinel :tace 188 the'locking pavvl 1811? il in e point of the lockingpaw gement with the locking Wheel the cara shalt 156 is lree to nieveinstant the bunter 173 contacts wi bell crank 1711 to move the -leed dogturn the feed Wheel 157 @n rnovernent o'l3 'the bunten the other surface196 on the dog1 190 contacts with other inclined surface 189 on the tailof locking'paxvl and the dog` 190 rides over, the tail or the lockingpavvl .lifting the Weight 19.@jand then drops down into itsnormaloositioni. This backward movement is simply for the purpose ofgetting the parts into normal -position again. A spring 615 under thefront end of the locking pawl throws its end up into engagement with thelocking wheel as soon as the wheel has been moved.

The foregoing description explains the manner in which the cam shaft 156upon which is located the vertical cam 155 and the horizontal cam 154are given their step-bystep rotation in proper time with the movementsof the drill and tufter. The horizontal slide 152 ismoved in onedirection by the horizontal cam 154 by means ofa cam roll 200 (see Fig.3) which is secured to the back side of th horizontal slide 152 and thesaid slide 152 is moved in the other direction by the spring 201.

rlhe vertical cam 155 gives to the vertical slide 150l its verticalmovement through a cam roll 202 secured to a fork 203 (see Fig. 1) whichis itself pivoted near the middle of a lever 204. The rear end of thelever 204 is held by means of r`a vertically adjustable post `2057-itself secured to a bracket 206 on the frame of the machine. Theadjustment of the post 205 is made by means of an adjusting screw 616and a set screw 207. The front end of the lever/204 is provided with ahardened roller 208 which forms the point of engagement with the upperend of the slide 150; As the vertical cam 155 revolves, it raises orlowers the lever 204 and thus moves the vertical slide and attachedpartsin the vertical plane'for a predetermined amount. l

As previously stated, after the completion 'of the work of drilling andtufting each brush, it is-necessary to unlock the carrier and shift it asufiicient distance so that the next brush blanks will be in properposition to be tufted and drilled, respectively. Each blank holder 130has drilled in its back side two tapered holes 144, in which larereceived tapered locking pins 145 which lock rigidly the blank holderand carrier to the guide 611 and hold it so during the drilling andtufting. These pins 145 are 'secured to a plate 21.0, which for conven-lience is called `the locking pinplate. This plate is guided upon twobolts 211 which are secured in the rear face ofthe guide 611 upon whichthe carrier is supported. Nuts 212 are placed upon the ends of thesebolts and a spring 213 is interposed between the nut 212 and the lockingpin plate 210. These springs push the locking pin plate 210 and thelocking pins 145 forward into the tapered holes in the'backs of theblank holders 130. The locking pin plate 210 is slotted as shown at 214,Figs. 7 and 17, and a hook 215 is attached to the locking plate by meansof a pin 216. The lower surface of the hook 215 is notched, as shown at217 Aand a'small roller 218 is secured to the hookbyv'a stud 219.' Underthe vhook 215,is 1ocross-head is pi'votally secured one end of a link223, the other end of which is secured to a lever 224. The lower end ofthis lever is pivoted at 225 to the bracket 137. The upper end of thelever 224 is attached to mechanism which causes it to be swung about thepivot 225 whenever it is necessary to unlock the blank holders. Thesmall roller 218 on the point of the hook 215 is located so that it willcontact with a cam 226 when the locking pin plate has been moved out toacertain point, and as the cam"V roll 218 rides up on the camI` 226 itfinally lifts up the hook 215 until the hook'is disengaged -from the endof the pin 220 on the end of which is formed the quarter segmentpreviously referred to. As soon as theqhook is disengaged from the saidpin, the springs 213 force the locking. pinplate and locking pins backagainst the back sides of the' blank holders, andas soon as the holes144 in the blank holders come opposite the locking pins 145, the pinssnap-into the holes and lock the blank holders in place. This mechanismis such that the locking pins are drawnV completely outof their holesr asuiiciently long time before the hook 215 is disengaged from the pin 220to permit Ithe n blank holders to bev movedl far enough" so that whenthe locking pins snap back they cannot engage the holes from whichV theyhave been withdrawn, but rwill engage the next holes when the carrier ismoveda suiiicient distance. f

The shifting of the 'carrier 'is produced by an arm 230 provided ywith apawl 231. held inA engagement -by Ia spring 233 with a ratchet .wheel234 fast to theupper sprocket wheel 134. lWhen the arm 230 is moved tothe left, as shown at Fig. 6, thev ratchetl wheel234, the sprocket wheel134, and the carrierfwill be moved with it a distance depending upon thedistance which the arm 230 is moved. A slotted link 235 is conn ected atone end to the arm 230 and at the other end engages a pin 236 ontheupper end of the locking pin lever 224. .The

slot 237 in the link 235 is so proportioned `that the locking pinv lever224 is moved a Sufficient distance to unlock the blank holders beforethe pin`236 comes to the end of theslot 237. In Fig. 6 the partsareshown l in the position they occupy after the parts have beenunlocked and before-the shifting ofthe carrier has begun. furthermovement begins the shifting -of the blank holders and finally'disengages the locking pin hook 215 to permit the locking ,pins t0Snapiback and engage the holes in Thereafter the l the blank holdersvvlien the blank holders have been moved into place. i

The locking pin lever 22a is inoved by. a connecting rod 249 providedwith vtvvo ,end nieinbers 238 and 239 and aj turn buckle 2&1

for adjusting its length. The end'niember v239 is pivotally secured to afork 5l@ on the upper end of a lever 24:2 pivoted at 243 to a lu 244 onthe trame B of the machine. The fork 510 is arranged to swing a littleon a stud 5ll so that/the parts will not bind as the carrier is movedsidevvise by they horizontal cam.; rllie lever, 242, is itsell nioved bya hook '246 secured to the lever 242 by ya pin 247 sliding in a slot 248in the lever 242. rlhe hook 2&6 is yguided in suitable Ways in a.portion v250 of the traine B of the machine. 'lhe cani shaft 156 onwhich the horizontal and vertical canas are vlocated extends rearwardlythrough the ina" chine and has secured to its rear end a block "25L @nthis block 25l are` two levers 252 and 253, pivoted at 25d and 255respectively. These levers rotate with the caniV shall' l5@ and alterevery l@ degrees ol rotation the end ol one ol the levers 252 and 253cornes nnder the liook 246, as seen in llig. l,x lotli. ot theselevers'252 and 253 are out avvayas shown at a b, to permit this arin ofthe lever to rotate Without striking the proieet ing end et the lioolr246, the long 'et the levers 252,` 253 are 'lorined dat spaces c esuitable 'for engagement with tlie corre` spending flat space on the deg255., is pivoted at 257 to the rear end oi the biintersli le 172, 'whichreciprocates time hole is drilled and ol brisles This pavvl 25'? is boldup into the position shown n by nieans or a :d

"3f-1 spring 258 llhen one oie the levers a' 253 has revolved to sncli'aposition th t it is in the natli otlie doe` 255, tbeV next ardrdovenient ol l' e bunter slide 172 eares tlie dog 256 nn orlever-"2520er as the l"case inay be, the dog 256 bere ele "oressedagainst tbe action `the 258. the end ein' "Hic-iy strolre el the bnnerslide the dog 256 snaps np and o n the 'lor-- Ward inovernent of tbe'bunter slide engages the dat surlace c ,and svvings the lever about itspivot 25e or4 255, At this time the upper end of the lever is inengagement vvif the Q 1.' hook 246, the 'forward movement oi the bunterslide carries the lovver end of the lever 252 or 253 toward the rightand pulls the locking pin lever 22d and the carrier nioving arm 230 overto the left to iinloclr the blank holders and rotateI the carrier.lltthe end or" the orvvard movementol the bunter slide at which tiine,shalt are (rotated'one notch, the lever 252 or 253 as the case-maybe,being rotated by the cani shaft is disengaged roin the dog 256, Whilethe bunter slide is still in its forward position, As soon as the lever252,

' of each cycle of arm oi" this bell cranlr 272 engages the fleed Wheeland earn` maaier or 253, is released, the spring 512 restores the partsto normal position wlicli is that shown in Fig. l. The levers 252 or 253are restored to the position shown in' l4`igxl by springs 618 and 619,one end ot which is fastened to a stud G2G on the cam shalto The leverthen rests against a pin @2l so that it is ready to' be engnged on thenef-rt rotation ol the cam shaft.,

ller a reason later to be explained, it is necessary to turn the camshaft 156 one extra notcli of the leed wheel 157 at the end movement otthe inacliinerz This is accomplished by rneans of a tail v piece 2G()secured at therear end of the cani shalt l56. @nce in each revolutionpiece 260 'Svay' cornes to a position in the an inclined surface 26l onthe rear end or the bunter slide 172, lllien the bunter sl'de cornesback at the end ot the stroke, cani surface 262i strilres the tail piecepushes it to one side to the position shown in Fig. il, causing the canishaft l5@ to rotate a `distance 'i d oi one notch oi tlie Wheel. Topermit this rotation tlielocir -Wheel l58 has one tooth removed as seen51H3, in llig., ll, so that at this time tlie i pavvl 'lll does notliinterfere vvit" rnoveinent oil tlie :lf-eed vvlieel' and co n The"machine is controlled by tbe oper by neans of a pedal 2?@ see Fig, 2conn ed to a lever 2ll Wbich is itself' connec one arin the bell cranlr2?2, ll

l m secured tlie upper end aoclnteli 2W.- 'vliicln opeates the clutch 27operator presses dovvn the tref f f' y l,wheel 276- and necessary to inot c c i o 5l; as i i 5l8"vvliicli engages "feed Wheel prevents itsaclrvvard been c7 the 'feed c Tllie proiectio` lie -feed dog i tendsiinder tlie lioolr Oatvl which forms part'o'l the lever when the leverlillis lifted np hanf 'feed dog. l??? and tlie pavvl 5lS lov engagedAtrein 'leed Wheel and Wheel is then 'lree to vbe moved by Vllie staring5l@ lreeps tlie lioolr e normally engagement vvitli :E vvlaeel. .k

The o'oeration oil Kthe machine is in era-l as tollovvs: Yl"lie operatorinserts an drilledbriisli blank C in tbe proner bla holder 130 and adrilled blanlr D blank holder next but one above.

ln tice, and alter tliev inacliine liasbeen maaier "bores a hole,theknot picker selects a knot of bristles, the die cuts a staple andthe( plugger sets the knot of bristles in the hole by means of .thepusher. After the drill has been drawn out of the drilled hole, the feedwheel 157 is moved one notch by means of the bunter and intermediateparts. The movement of the feed wheel moves the carrier to the 'left(see Fig. 3)' the distance of one notch and the vertical cani lowers thecarrier a slight amount because as will be y seen from F ig. 18 the rowsof bristles in the finished brush ar'e not parallel but converge. towardthe tip of the brush. This general movement of the parts 4.continuesuntil the end of the first row of brush No. 1 is reached. After the lasthole of this row has been-drilled, the neXtmovement of thefeed wheellowersthe carrier to position the brush blank to begin the second row ofholes. As the second row' of holes is horizontal, that is follows themedian line of the brush, the brush is not moved vertically whilev thesecond row is being drilled and tufted. At the end of the second row thedog 256 on the rear end of the bunter slide which resultsin unlockingthe carrier and shifting it to bring the-next pair of blanks in positionto be operated upon. rlhe saine forward movement of the bunter slidewhich unlocks the carrier and shifts it, moves the feed wheel lone notchand the correspendingy movement of the vertical cam raises the brushblank so that it is in position to have ,the hole z in brush blank No. 2'drilled and the corresponding hole inthe brush blank which is vbeforethe plugger tufted. The

drilling and tufting of this pair of brush blanks is the same as thatvpreviously described, except that the path followed by the drill andplugger lis dierent from that followedl by the .drill and tuft'e'r'during the drilling and lling of the lirst pair of brush blanks. rIllepaths of Vmovement of the two brush blanks will readily be seen from an`examination. of Fig-18. The starting point for the rst` and secondbrushes being 'in- .dicated respectively at f and h and the finishingpoint being indicated by g and c respectively. .It will be seen that thenext lpoint after the hole marked, it in lFig. 18 4will bethe hole fwhich is the starting point of the'irst brush and that' there is avconsiderable vertical i distance between these two holes. The carrier'is lifter through this Ivertical distance'by means of the vertical cambut asithis Adistance is vso large that it would make the' cam too steepif the movement were made during a single notch of the feed wheel, anadditional notch is provided in the'feed wheel, as has been previouslydescribed.` rlhe feed wheel therefore has eighty-one notches, forty forthe forty f tufts of-bristles in the firstbrush, forty for.

the second brush and one additional hole at l A the end of each cycle ofrevolution to assist point. rlhe feed wheel is moved this additionalnotch` by thetail piece 260, as previously described. The machine isthen ready to begin a 'second lcycle of movements. i ln Fig. 19 thereisfshown a diagram of `in setting the-machine back to its starting j thevertical and horizontal cams and there has been indicated on the camsthe various points of the cams which are in contact with the cam roll atthe time when the holes at the beginning and end of each brush are.

being drilled. F or convenience the same reference characters have beenapplied to this ligure as are applied to F ig. 18 to indicateVcorresponding positions on the cam. llt will be noticed that thestarting points on 4the two cams are at a distance of about ninetydegrees from each other .owing to the fact'that the cam roll for thevertical cam is above the cam while the cam roll for the horizontal camis at the left hand side of the cani.

l/Vhat il claim is 1. rlhe improved machine for drilling an filling a.brush having an odd number of rows which comprises a drill and tufter,and a carrier holding a plurality of brush blanks, positioning mechanismfor said carrier making a complete cycle of movement during thecompletion of the work .upon two brush blanks, and shifting mechanismshifting the carrier twice for each cycle of movement of the positioningmechanism.

2. 1n a machine of the character described, the combinationv of a toolto operate upon a brush blank, a carrier holding a plurality of brushblanks, a shaft, two cams thereon moving the carrier in two directionsin a plane at 4right angles to the tool., said cams ict by a singlerotation of the cam shaft controlling thepositioning movements of thecarrier'during the operation on two successive blanks,.and shiftingmechanism shifting the carrier to present the next blank to the tool,said shifting mechanism acting twice during each revolution of the camshaft.

' the operation on two successivev pairs of brushes during onerevolution of the cam shaft, and yshifting mechanism shifting thecarrier to present a new pair of brushes to the drill and pluggerrespectively, said shifting mechanism acting twice during eachrevolution of the cam shaft.

l. ln a brush making machine, the combination of a drill and plu'gger, acarrier composed of a series of work holders., automatic positioningmechanism therefor moving the said carrier in two directions in av planeat right angles to the said drill and plugger. a cam shaft, cams thereonacting on the said carrier to position the samel in said plane, a feedwheel on thesaid cam shaft, a reciprocating member moving the said wheelstep by step, a lever on the cam shaft and in the path of the saidreciprocating member once for each revolution ofthe cam shaft, shiftingmeans to move the holders comprising the carrier bodily and connectionsfrom the said lever to the said shifting means so that the saidreciprocating member will actuate thesaid lever to shift the carrieronce for each revolution of the cam shaft.

5. ln a brush making machine, the combination of a drill and plugger, acarrier composed of a series of work holders., automatic positioningmechanism therefor mov ing the said carrier in 'two directions in aplane at right angles to the said drill and plugger, a cam shaft, camsthereon acting on the said carrier to position the same in said plane, afeed wheel on the said cam shaft, a reciprocating member. moving thesaid feed wheel step by step, two levers pivoted on the cam shaft atsubstantially 180 degrees from each other, each lever coming into thepath of said reciprocating member once for each` revolution of the camshaft, shifting means l to move the holders comprising the carrierbodily, and connections from the said levers to the said 'shifting meansso that the said reciprocating member will actuate the said levers toshift the carrier twice for each revolution of the cam shaft.

6. ln a machine of the character described,

the combination with a plugger having a ,channel therein and a pluggertongue working in the said channel of a bristle reserroir,

maaier a knot picker consisting of a reciprocating member having a notchin one side thereof, said knot picker entering the reservoir, paralleland adjacent to aI wall thereof,y a grooved guide for said knot pickersubstantially at right angles to the bristle channel in the saidplugger, a cam to actuate said knot picker, said cam having a resttherein so that said knot picker will stand still for a portion of itsstroke with the said notch therein at the junction of the picker pluggerchannels.

7. ln a machine of the character described, a plugger slide thereformovable in ways toward and away from the work, a pusher sliding in achannel Ain the said plugger, a reciprocating member actuating the saidpusher, cushion pins on the said plugger slide in the path of the saidmoving member whereby the plugger slide stands still during the firstpart of the movement of the pusher is then moved forward when the movingmember contacts with the said spring pins and then stands still duringthe further advance of the plugger.

8. ln a machine of the character described, the combination with aplugger slide having a slot therein, a pusher movable relatively to theplugger slide in the same direction, an actuating member moving thepusher, said member projecting into the slot in the said plugger slideso that the plugger slide is moved by the said member` in unison withthe pusher for a portion of the stroke near the ends thereof. 1 9. ln amachine of the character described, a' plugger slide therefor movable inways v toward and away from the work, a stop arm on'the said pluggerslide, a stop on a lined lpart of the machine contacting with` the saidstop arm, a pusher sliding/in a channel in he said plug'ger, areciprocating member actuating the said pusher, cushion pins on the saidplugger slide inthe path of the said moving member wherebythe pluggerslide stands still during the nrst part of the movement of the pusheristhen moved forward l

